fix(timer-ng): decrease the minimum/maximum threads (#12608)

Too high concurrency setting might make Kong throws error at the runtime. (cherry picked from commit 3192675) Co-authored-by: Qi <[email protected]>
Kong · Feb 23, 2024 · f603004 · f603004
1 parent 3a8fb78
commit f603004
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diff --git a/changelog/unreleased/kong/decrease-cocurrency-limit-of-timer-ng.yml b/changelog/unreleased/kong/decrease-cocurrency-limit-of-timer-ng.yml
@@ -0,0 +1,3 @@
+message: |
+    Fix a bug where the ulimit setting (open files) is low Kong will fail to start as the lua-resty-timer-ng exhausts the available worker_connections. Decrease the concurrency range of the lua-resty-timer-ng library from [512, 2048] to [256, 1024] to fix this bug.
+type: bugfix
diff --git a/kong/globalpatches.lua b/kong/globalpatches.lua
@@ -99,8 +99,8 @@ return function(options)
 
     else
       _timerng = require("resty.timerng").new({
-        min_threads = 512,
-        max_threads = 2048,
+        min_threads = 256,
+        max_threads = 1024,
       })
     end